Interesting. If I understand meathead's response correctly, he's talking about getting too much draft. Mellow seems to be talking about having too little draft. My chimney is in the center of the house and it's quite tall. I suspect that I would be more likely to have too much draft than too little. I guess the only way to know for sure is to try it out. I've gotten a lot of nice responses from folks who point out that the long, low burn of a cat stove, especially the Blaze King, would be great. However, I still like the idea of not having a catalyst to replace. That, along with over $1,000 price difference, still has me leaning heavily toward a non-cat stove. It will definitely be the shielded "convection" type with a blower. I will not have a single-wall "radiant" type heater.